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# Mixed Convection of Non-Newtonian Erying Powell Fluid with TemperatureDependent Viscosity over a Vertically Stretched Surface

Ahlam Aljabali1, Abdul Rahman Mohd Kasim1,*, Nur Syamilah Arifin2, Sharena Mohamad Isa3

1 Centre for Mathematical Sciences, UMP, Gambang, 26300, Malaysia
2 Faculty Computer and Mathematical Sciences, UiTM Johor, Pasir Gudang Campus, Masai, 81750, Malaysia
3 Manufacturing Engineering Technology Section, UniKL, Italy Design Institute, Kuala Lumpur, 56100, Malaysia

* Corresponding Author: Abdul Rahman Mohd Kasim. Email:

Computers, Materials & Continua 2021, 66(1), 421-435. https://doi.org/10.32604/cmc.2020.012322

## Abstract

The viscosity of a substance or material is intensely influenced by the temperature, especially in the field of lubricant engineering where the changeable temperature is well executed. In this paper, the problem of temperature-dependent viscosity on mixed convection flow of Eyring Powell fluid was studied together with Newtonian heating thermal boundary condition. The flow was assumed to move over a vertical stretching sheet. The model of the problem, which is in partial differential equations, was first transformed to ordinary differential equations using appropriate transformations. This approach was considered to reduce the complexity of the equations. Then, the transformed equations were solved using the Keller box method under the finite difference scheme approach. The validation process of the results was performed, and it was found to be in an excellent agreement. The results on the present computation are shown in tabular form and also graphical illustration. The major finding was observed where the skin friction and Nusselt number were boosted in the strong viscosity.

## Keywords

A. Aljabali, A. Rahman Mohd Kasim, N. Syamilah Arifin and S. Mohamad Isa, "Mixed convection of non-newtonian erying powell fluid with temperaturedependent viscosity over a vertically stretched surface," Computers, Materials & Continua, vol. 66, no.1, pp. 421–435, 2021.

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